On Sat, Dec 01, 2012 at 02:45:57AM +0900, Joonsoo Kim wrote:
> @@ -614,21 +616,35 @@ static int ashmem_pin_unpin(struct ashmem_area *asma,
> unsigned long cmd,
> pgstart = pin.offset / PAGE_SIZE;
> pgend = pgstart + (pin.len / PAGE_SIZE) - 1;
>
> - mutex_lock(&ashmem_mutex);
> + if (asma->shared_mapping) {
> + mutex_lock(&ashmem_mutex);
Wouldn't we need to hold the mutex while we check the
->shared_mapping?
regards,
dan carpenter
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